Swift code is easier to understand and write. Swift is open Source, fast, Powerful and Interoperability(Code of Swift can be used along with existing Objective-C projects). Swift is also used in server applications which provides security and high performance. It has a similar syntax to Objective-C or C.
Objective-C is a superset of the C programming language and provides object-oriented capabilities and a dynamic runtime. Objective-C inherits the syntax, primitive types, and flow control statements of C and adds syntax for defining classes and methods.